Journal of Materials Chemistry A
·
2024
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IF 10.7
Lulin Hu,Weiyan Yu,Jian Liu,Yi Yang,Jingcheng Hao,Lu Xu
Aqueous magnetic gels normally fabricated by embedding inorganic magnetic particles into organic hydrophilic polymeric networks have been well-established for various potential applications, but developing their counterparts that barely comprise inorganic magnetic particles and water remains an appealing challenge in light of the underlying preponderances in facile preparation, high safety, eco-friendliness and good stability under strong irradiating conditions. In addition, although aqueous magnetic gels have been exploited for numerous industrial and biomedical purposes, there have been few reports on aqueous magnetic gels for tribological applications. Herein, we illustrate magnetic gels simply prepared from binary mixtures of composite Fe3O4 nanoparticles and water. The aqueous gels can provide ultralow friction and wear for steel/ZrO2 interfaces even under very high load-bearing conditions owing to the tribochemical reactions of the magnetic nano-gelator. They show excellent self-healing capacity either upon alternately changing external shear strains or cutting. Considering the advantages of their organic scaffold-free nature, the gels possess inherent low cytotoxicity, flame retardancy, chemical degradability and irradiation resistance that contribute to minimizing their health risks, safety concerns, environmental burdens and stability issues under harsh conditions. Our study may provide new insights into the design and preparation of novel inorganic-based smart soft materials for nanotechnology, sustainable engineering and colloidal chemistry.
研究领域:
材料科学
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纳米技术
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化学工程
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产品关联
DOI
高影响因子
ChemistrySelect
·
2023
·Vol. 8
·期 18
·e202204784
·
IF 2.1
Rui Teng,Honghua Wang,Minjie Qu,Guangyuan Zhou
Graphical Three amorphous poly (aryl ether ketone) s with different structures resistant to ultra-high dose gamma irradiation were designed and successfully synthesized. The stability of polymer materials used in nuclear environment directly determines the life and reliability of nuclear power equipment. Poly (aryl ether ketone) (PAEK) itself exhibits excellent irradiation resistance which can be widely used. The emphasis of this study lies in designing and synthesizing three different structures of amorphous PAEKs by the solution S N 2 nucleophilic polycondensation. The thermodynamic properties and structural changes of the materials under gamma- ray (γ-ray) irradiation were investigated and the irradiation-resistance mechanism was discussed. The present results illustrate that the performance can be basically stable lower than 10 8 Gy. Up to 10 13 Gy dose, γ-ray has little effect on the impact resistance and Young ′s modulus of the three materials, the tensile strength and elongation at break decreased with the increase of irradiation dose. No new structures were formed after irradiation, and all the three materials decomposed slightly caused by oxidized.
研究领域:
材料科学
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核工程
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高分子化学
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DOI
高影响因子
Science Advances
·
2025
·Vol. 11
·期 20
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IF 12.5
Shangda Qu,Qianbo Yu,Chengpeng Jiang,Taoyu Zou,Honghuan Xu,Longlong Zhang,Mengze Tao,Qingshan Zhu,Song Zhang,Cong Geng,Mingjian Yuan,Yong-Young Noh,Wentao Xu
Space exploration, particularly in the extreme space environment, has gained increasing attention. Networked robots capable of real-time environmental perception and autonomous collaboration offer a promising alternative for executing complex precision tasks. Consequently, achieving local reliable communication and preparing irradiation-tolerant materials are essential. Here, we demonstrate a cephalopod-inspired neuromorphic loop that enables chromaticity communication between individual near-sensor processing units. A programmatically aligned aluminum zinc oxide nanofiber array was fabricated and used as conductive channels that can withstand prolonged (~104 seconds) and high-dose (~5 × 1015 ions per square centimeter) proton irradiation. The neuromorphic loop, with capabilities in environmental perception, event-driven processing, adaptive learning, and chromaticity communication, enables the self-driven collaboration of robotic hands based on tactile feedback and ensures reliable mobile links for drone flight control. This work pioneers a direction in neuromorphic visible light communication and marks important progress in the field of biomimetic intelligence.
研究领域:
空间探索技术
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材料科学
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神经形态工程
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机器人学
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DOI
PubMed
高影响因子
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
·
2019
·Vol. 104
·期 1
·427-437
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IF 3.67
Liu Yifan,Wang Weiwei,Shah Syed Bilal,Zanaroli Giulio,Xu Ping,Tang Hongzhi
Phenol accounts for a large proportion of the contamination in industrial wastewater discharged from chemical plants due to its wide use as a raw chemical. Residual phenol waste in water and soil significantly endangers human health and the natural environment. In this study, an Acinetobacter radioresistens strain, APH1, was isolated and identified for its efficient capability of utilizing phenol as sole carbon source for growth. A draft genome sequence containing 3,290,330 bases with 45 contigs was obtained, and 22 genes were found to be involved in phenol metabolism and 51 putative drug-resistance genes were annotated by genomic analysis. The optimal conditions for cell culture and phenol removal were determined to be 30 °C, pH 6.0, and a phenol concentration of 500 mg/L; the upper limit of phenol tolerance was 950 mg/L. Based on GC-MS analysis, the key metabolites including cis,cis -muconic acid, catechol, and succinic acid were detected. During bioremediation experiment using 450 mg/kg (dry weight) of phenol-contaminated soil, the strain APH1 removed 99% of the phenol within 3 days. According to microbial diversity analysis, the microbial abundance of Chungangia , Bacillus , Nitrospira , Lysinibacillus , and Planomicrobium increased after the addition of phenol. Furthermore, at day 23, the abundance of strain APH1 was greatly reduced, and the microbial diversity and structure of the whole microbial community were gradually recovered, indicating that strain APH1 would not affect this microbial ecosystem. These findings provide insights into the bioremediation of soil contaminated with phenol.
研究领域:
环境微生物学
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生物修复
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基因组学
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DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2025
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IF 11.3
Jiaqing Huang,Xiaoyong Xia,Jiajia Li,Liang Liu,Chunyue Xu,Jinkai Qiu,Cheng Lian,Qingfeng Xu,Jianmei Lu
The extraction of TcO 4 - from nuclear wastewater via adsorption-based methods is recognized as a highly promising strategy but confronted with significant challenges due to the harsh conditions often encountered, such as highly acidic or alkaline environments, elevated ionic strengths, and intense radiation fields. In this work, we have designed and synthesized a triazine-tri-imidazole based cationic covalent organic polymer, CTFT, with covalent triazine frameworks (CTF) as the structural building blocks and tri-imidazole-based (TIB) units as the connecting motifs. This highly conjugated polymer successfully overcomes the aforementioned challenges and exhibits remarkable ReO 4 - (a non-radioactive substitute to TcO 4 - ) uptake capabilities across five critical performance metrics simultaneously: ultrafast adsorption kinetics (equilibrium reached within 0.5 min), exceptional resistance to strong acids and bases (4 M HNO 3 and 4 M NaOH), high selectivity towards ReO 4 - (80.5 %, 5000 × over SO 4 2- ), superior radiation resistance (400 kGy γ-rays), and outstanding recyclability (20 cycles, 95.6 % retention). Additionally, CTFT achieves a high ReO 4 - removal efficiency in simulated Hanford waste (85.3 %, 10 g/L). Experimental and theoretical calculation results demonstrate that strong electrostatic interactions and affinity exist between imidazolium cation and ReO 4 - . This finding provides a potential design strategy for developing polymers with high durability in the field of nuclear environmental remediation.
研究领域:
环境修复
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高分子化学
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核化学
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材料科学
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放射化学
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废物处理
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产品关联
DOI
PubMed
高影响因子
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